Thanks for all your helps. The dig for version.bind and hostname.bind
sometime works, sometime not. as you see:
pyh@dwdns153:~$ dig txt chaos version.bind @h.root-servers.net
; <<>> DiG 9.6.1-P2 <<>> txt chaos version.bind @h.root-servers.net
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21537
;; flags: qr rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;version.bind. CH TXT
;; ANSWER SECTION:
version.bind. 0 CH TXT "NSD 4.0.3"
;; Query time: 257 msec
;; SERVER: 128.63.2.53#53(128.63.2.53)
;; WHEN: Wed Apr 30 09:02:23 2014
;; MSG SIZE rcvd: 52
pyh@dwdns153:~$ dig txt chaos hostname.bind @h.root-servers.net
; <<>> DiG 9.6.1-P2 <<>> txt chaos hostname.bind @h.root-servers.net
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 29675
;; flags: qr rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;hostname.bind. CH TXT
;; ANSWER SECTION:
hostname.bind. 0 CH TXT "003.nzy.h.root-servers.org"
;; Query time: 256 msec
;; SERVER: 128.63.2.53#53(128.63.2.53)
;; WHEN: Wed Apr 30 09:02:37 2014
;; MSG SIZE rcvd: 70
pyh@dwdns153:~$
pyh@dwdns153:~$
pyh@dwdns153:~$ dig txt chaos version.bind @h.root-servers.net +short
; <<>> DiG 9.6.1-P2 <<>> txt chaos version.bind @h.root-servers.net +short
;; global options: +cmd
;; connection timed out; no servers could be reached
pyh@dwdns153:~$
pyh@dwdns153:~$
pyh@dwdns153:~$ dig txt chaos version.bind @h.root-servers.net +short
; <<>> DiG 9.6.1-P2 <<>> txt chaos version.bind @h.root-servers.net +short
;; global options: +cmd
;; connection timed out; no servers could be reached
And this is the mtr info for h.root-servers.net:
pyh@dwdns153:~$ mtr h.root-servers.net --report
HOST: dwdns153.dns.yt.yygamedev.c Loss% Snt Last Avg Best Wrst StDev
1. 113.108.228.129 40.0% 10 0.5 0.5 0.5 0.8
0.1
2. 121.14.46.93 10.0% 10 0.5 0.5 0.5 0.5
0.0
3. 121.14.37.33 0.0% 10 2.7 3.3 1.6 7.2
1.9
4. 121.14.37.6 0.0% 10 0.4 0.4 0.3 0.7
0.1
5. 121.14.50.13 0.0% 10 1.5 2.3 0.9 4.3
1.2
6. 113.108.208.97 0.0% 10 4.8 3.9 1.6 5.9
1.5
7. 202.97.34.202 0.0% 10 1.1 1.5 0.9 5.2
1.3
8. 202.97.61.234 0.0% 10 2.1 1.6 1.3 2.2
0.3
9. 202.97.52.154 0.0% 10 148.6 149.7 147.7 151.3
1.3
10. 202.97.49.158 0.0% 10 151.5 150.7 148.6 151.8
1.2
11. 218.30.54.198 0.0% 10 174.9 183.0 174.9 209.5
9.7
12. los-edge-05.inet.qwest.net 0.0% 10 169.8 175.9 169.8 180.5
3.4
13. 65-126-18-214.dia.static.qwe 0.0% 10 172.7 179.4 172.7 186.4
4.5
14. 143.56.244.2 0.0% 10 160.5 173.9 160.5 192.2
11.6
15. ap-1-1-1-nd.level3-lax.core. 0.0% 10 160.7 167.6 160.1 173.4
4.7
16. np-5-1-1-nd.sandiego.core.dr 0.0% 10 177.9 185.6 177.9 195.3
5.0
17. 138.18.190.89 10.0% 10 163.8 172.2 163.8 178.3
4.4
18. 138.18.190.114 10.0% 10 163.2 163.4 163.1 164.8
0.5
19. 128.63.2.53 10.0% 10 171.2 180.3 171.2 185.4
4.2
Regards.
Ken
δΊ 2014-4-30 5:16, Warren Kumari ει:
Oh, sure, I totally agree NSID/hostname.bind etc. will be very helpful.
My experience is that if these query hit a masquerading root node, you
mostly won't get an answer, by either no ANSWER section or empty string
in ANSWER section.
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